Hardware design based on 20 MHz transputers, 120 ns first-in, first-out (FIFO) memory, and a 20 MHz counter is discussed. The two transputers are used to generate the states and to write them into the FIFO memory. The data generated by the transputers is written in the FIFO memory in parallel. The system design is characterized by a minimal state

We present what we believe to be the first truly simultaneous UBVRI photopolarimetric results for a sample of eight 'normal' quasars. In five of these quasars we have not detected any measurable polarization, this result being consistent in some cases, but not necessarily in others, with the previous white light measurements of these quasars. 3C

We have used high-resolution spectra of the Ca II H resonance line in late-type dwarfs, obtained with high S:N ratios, over a period of four years to widen our understanding of the dynamical behavior of the Ca II emission cores. All of the stars dealt with in this article, which are chromospherically active, show variability both in core emission

Results of CCD photometry of the three low-luminosity radio galaxies which contain jets at the kpc scale: B2 0836 + 29, B2 2116 + 26, and B2 2236 + 35 are presented and discussed. The photometric properties of the galaxies are examined by analyzing the radial variations of surface brightness, ellipticity, major axis position angle, and isophote

High resolution spectrophotometry of the black hole system V404 Cyg during quiescence, performed during 1990 and 1991, is discussed. In addition to a 6.5d orbital modulation, there is strong evidence of a 0.24d periodicity in both the H alpha emission radial velocities and the continuum flux. The relative phasing between the photometric and

The influence of the upper layers of a star on p-mode frequencies can be described asymptotically by means of a phase function, which depends essentially only on the frequency of the mode. The extent to which the phase function may provide information about the superficial layers of a star is investigated. In particular, a linear relation between